What is the shape-memory plastic used for? A. To protect the screen from cracking. B. To help the wavelength of ultraviolet light strike the pixels. C. To change or hold the shape of the surface of the screen. D. To minimize the noises produced by frequencies. ...
Theconductancecan vary depending on the current or voltage applied to a control electrode or on the intensity of irradiation by infrared (IR), visible light, ultraviolet or X-rays. The specific properties of a semiconductor depend on the impurities -- known as dopants -- added to it. How do...
Germicidal ultraviolet disinfection is rapid, low-maintenance, and does not use chemicals or produce byproducts. To achieve proper disinfection of water, air, or surfaces, each medium must be exposed to UV-C light (at the wavelength of 254 nanometers) for an appropriate amount of time, dependi...
What is the temperature of Alpha Centauri? What are the current celestial coordinates of the Sun? What is the absolute magnitude of Rigel? What is the sun's mass? How many yards in a astronomical unit? What is ultraviolet astronomy used for?
I can't remember whose idea it was for us to meet again.我不记得让我们再次相见是谁的主意。Mr Liu wants to talk to the students whose homework hasn't been handed in.刘老师要跟那些没交家庭作业的学生谈话。【what】What happened next?后来发生了什么事?What is this used for?这做...
aWe provide interpretation for changes of ultraviolet absorption and fluorescent spectra in the section 3.1 and 3.2 of the manuscript, and other interpretation for each of our results are given in the corresponding experimental results 我们为紫外吸收和萤光光谱的变动提供解释在第3.1部分和第3.2部分原稿,并...
Spot UV is a popular coating technique where high-gloss UV coating is applied to a product, by using ultraviolet (UV) light to cure the printed material’s varnish. This spot UV printing method gives the targeted “spots” a shiny, vibrant aesthetic, and adds a protective coating to the ...
The Wood's light or Wood's lamp was invented by a physicist named Robert Wood. It's a light that emits long-wave ultraviolet light and can detect fluorescence in skin and hair. A Wood's lamp can be used to detect bacterial or fungal skin infections. It can also be used to detect sk...
uvled curing light source is more and more widely used, uvled light source is divided into point light source, line light source, surface light source and other types. uvled light source through a fixed band of LED irradiation head to produce a certain band of ultraviolet light, used to ...
Another benefit to ultraviolet light is its ability to sterilize. UV waves are used in air and water purifiers as a way to eradicate bacteria and viruses. The waves are also instrumental in our bodies' production of vitamin D. When UV waves hit the skin, they stimulate the vitamin's produc...